Art of weaving



June 17, 1930. w NICOLET 1,764,574

ART OF WEAVING Filed Dec. 1925 8 Sheets-Sheet l W. NICOLET ART OFWEAVING June 17, 1930.

Filed Dec. 7, 1925 8 Sheets-Sheet 2 m FWHI WMI m a v onou ona 93- 33June 17, 1930. w. NICOLET ART OF WEAVING 8 Sheets-Sheet 3 Filed Dec.1925 Q Q Q i w. NICOLET ART OF WEAVING June 17, 1930.

Filed Dec. '7, 1925 8 Sheets-Sheet 4 I J mw Nu June 17, 1930. w co1,764,574

ART OF WEAVING Filed Dec. '7, 1925 8 Sheets-Sheet 6 H 7 June 17, 1930.

w. NICOLET 1,764,574 ART. OF WEAVING 7 Filed Dec. '7, 1925 v sSheets-Sfieet 7 w. NICOLET ART' OF WEAVING Fild Dec. '7, 1925' 8Sheets-Sheet 8 I "H ll I" W ill II III ll llllill i Iilllllllil iii:

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ll lllllllll lllllllli H Patented June 17, 1930 OFFI E wanna mconn'r, ornmrzre, GERMANY I ART WEAVING' Application filed December Z, 1925,Serial No.

My invention refers to the art of weaving and it particularly concernsmeans whereby the speed .of; weaving and in accordance therewith thequantity 'of woven fabric produced per unitof time arematerially'1ncreased. These means comprise im rovements in looms, which will bedescribe more fully hereinafter.

In the looms hitherto in use, the warp threads extend from the warpbeams in one direction close together to the leaves and the mounting-andacrossthem= and the reed to 'the' woven fabric. By raising part of thewarp threads and lowering the rest, a shed is formed in which the weftis inserted by the shuttle. The thread of the weft is then set on thefabric by swinging the reed and is ,tiedup by changing the shed,whereupon the same procedure is gone through anew.

. The present invention is desi' nod to materially increase the outputof a 00m of this kind. In accordance with this invention one part. .ofthe warp threads is placed at an angle to the rest of the threads infront of 2 the path described by the shuttle in such manner that thetwo'groups of warp threads form a second shed which is not chan ed inthis'place and into which while the s uttle is driventhrough theordinary shed, a second shuttle is driven which also inserts a weft. TThe reed. customaril employed for casting the weft onto the abric ispreferabl replaced by' combs.-

Iii the drawings aflixed to. this specification and forming. an; thereofthe new meth- 0d of weavin an a loom embodying-myinvention "are ilustrated diagrammatically by waiy of example. I n the drawings Figs. 1'and,2 are diagrams illustrating different positions of the. warpthreads as arranged in accordance with thls invention. 7 Fig. 3 is adiagram illustrating a piece of fabric manufactured inaccordance withthe novel method.

- Fig. 4 is a front elei ation and Figl5 is a rear elevation, with someparts broken away, of the loom. Fi 6 is. a cross-section-on the lineVI-VI in F g. 4 drawn to a larger scale.

73,718, and in Germany meeme r 13,19

i 7 is a front elevation of one. of the shutt e boxes a'rr'angedat theendsof the machine, drawn to a larger scale also.

Fi 8 is a cross-section on the line VIII- VII inFig. 7 and f I Fig. 9 isa perspectiq'y'ie view showingin a I diagrammatic mannerE- andat a larer scale the way of inserting 'the weft int e shutt e.

Fig. 10 is a diagram of connections illus, trating .electric means forcontrolling the operation of the'shuttles in order to avoid Y tearing ofthe threads. I

Referring first to Figs. 1 and 2 of the drawings" 1 and 2 aretwo warpbeams disposed at "different levels,'one above the other, and 3 and 4are the two groups of warp threadswound u onthese beams. The warpthreads 3 exten xthrou h eyes 5 formed at the ends of the teeth 0? acomb 5, the warp threads 4 through eyes 6-at the ends of the teeth of acomb 7, this latter being positioned to. the rear of comb 5-viewed inthe direction towards the fabric. The warp threads 4.- extending throughcomb 7 are so guided that they extend at an angle to the warp threads 31n front of comb 7. This is obtained by the .positioningof warp beam 2at a higher level than warpbeam 1. However, if both groups of warpthreads are arranged on a single war beam, the same eflect can beobtained by; eading the warp threads 4'over guide sheaves disposed abovethe warp threads 3.. a

The two groups of threads thus permanently formin front of comb 7a shedwhich is open towards'the warp beams 1 and 2. Comb 5 and,if-desired,also comb 7 are movable in the vertical direction. In thelowermost position of comb 5, the warp threads;3 extend some distancefrom the war threads 4.underneath the eyes of comb 7. n this ositionofthe threads the shed spoken'of above is open down to theifabric 8. a.If, however, the warp threads 3- are 95 raised by comb 5, they enterinto thezgaps of comb 7, (which may at the same time move-inthedirection towards comb 5) and the groupsof threads 3iand 4 are thuscaused to cross, whereby another shed is formed to 'wefts which ma"shuttles travelling between guides.

the rear of comb 7 (Fig. 2). According to the present invention a weftthread is passed simultaneousl through each of these sheds, a shuttle 9ig. 2) introducing the weft 11, the shuttle 10 the Weft 12. Shortlybefore the war threads 3 are lowered and the warp threa s 4 raised fromthe osition shown in Fig. 2, the weft 11 entere in the shed to the rearof comb 7 is cast onto the edge of the fabric 8 by a reed 13. Bylowering the warp threads 3 and, if desired, raising the threads 4 theshed formed to the rear of comb 7 is opened, the weft 11 which had beencast onto the fabric being now tied up by the warp threads 3 and 4 whichnow cross directly in front of this weft. On the warp threads 3 havingsumed their lowermost positlon and the threads 4 their highest position(Fig. 1) the. shed formed between the comb 7 and the warp beams is nowopened towards the fabric 8. Theweft 12 entered into this shed has beenmoved during themovement of combs 5 and 7 by a fork 14 up to the levelof comb 7 and after the shed has been 0 ened towards the fabric 8, it iscast onto the abric by means of a separate reed 15 moving past andunderneath comb 7. The tworeeds 13 and 15 must be operated in suchmanner that the first reed does not form an obstacle to the casting onof the second weft by the other reed 15. Reed 13 must be caused to moveits weft in contact with the fabric at the moment when the groups ofthreads 3 and 4 are caused to cross; the same holds ood for weft 15, orelse the sheds would not be cleared for the next succeedin weft. As thewarp threads 3 are raised agam from their positlon shown in Fig. 1, thewar threads 4 being at the same time lowered if desired, they will acttowards t ing u the weft 12 when crossing the three s 4 an once moreforming a shed to the rear of comb 7.

Y While the shed formed to the rear of comb '7 is alternately formed andopened, the shed infront of the comb is ermanently formed, beinalternately close or opened by the com 7. By simultaneously entering twobe formed of a single thread or of a p urality of threads, in twojuxtaposed sheds the out ut of the loom is increased corresponding y.-Moreover the edge portiom of -,the, fabricis firmly tied up b the weft12' inserted in the always open sli ed, as .can be seen by inspectingFig. 3, which illustrates a fabric produced in this manner and in whichtwo weft threads have been entered in each shed at each operation, theseweft threads being taken from stationary bobbins.

The bobbins as well as the shuttles may be formed in a different manner.I can either use freely travelling shuttles or I- can again asweave withweft material disposed in the shuttles or I can employ weft materialtaken fromstationary bobbins. This latter mode of proceeding ispreferable inasmuch as in this case the shuttle can be kept materiallylower and inconsequence thereof the shed may be kept lower also.However, this can only be done provided that the character and purposeof the fabric admits of it. The shuttles can be moved by means ofdrivers, springs or in an other suitable way.

In the loom il ustrated in Figs. 410 and which is adapted for carryingout my novel method of weavin stationary bobbins 16, 17, 18 are providedand both shuttles 9 and 10 move between guides 19 and 20 respectively.The guiding means 19 provided for shuttle 9 are formed by two parallelrails 19 and 19 located close together and hinged to each other by theirupper edges, these rails carrying two rows of laminae 19 disposed likethe teeth of a comb. Those parts of the two rows of laminae which faceeach other are provided with indentures cooperatin with each other toform a guide channel for the shuttle 9 which, as shown more particularlyin Fig. 9 has the form of a thin metal rod with a gripping hook 9projecting from each end of the rod.- The shuttle 9 is actuated by apair of strikers 22 (Fig. 7) one striker being dis osed on each side ofthe loom. These stri ers are placed under the action. of springs 21 andare guided in tubes 24 adjoining the shuttle boxes 23. Each striker 22has mounted in its middle a cross pin 25 projecting on either side froma slot formed in the tube 24. Thegdriver spring on one side of the loomis placed under tension by means of an angle lever 26, the forked end ofwhich applies itself against the cross pin 25 while its other arm isivoted to a rod 28, the lower end of which is influenced by an eccentricdisc 27 mounted on an intermediate shaft 30 (Fig. 7) driven from themain shaft 29 with one half of the speed of this latter. When the lever26 is rocked by the rod 28 and eccentric disc 27, the striker 23 isdrawn backwards, the springs 21 being at the same time compressed, andin its rearmost position the striker is locked by means of angle levers31 with hook-shaped ends which grip the cross pin 25. The compression ofthe striker spring on the other side of the loom is effected by a lever26 which is connected with the lever 26 by a rod 32 in such manner thatthese two levers always move in unison. When lever 26 forces the striker22 back, lever 26' releases the striker ap ertaining to it andviceversa. During tl ie backward movement of levers 26- and 26respectively, after the springs have been compressed, the shuttle 9 isplaced in front of the striker 22 ready for striking. Shortly before thelever 26 or 26' has reached its rearmost position, its forked endmeets'a, check 34 .rear end of rod 33, acts by meansiof a set screw 35on an arm of the hook-shaped angle levers 31' which lock the striker. Inconsequence of this movement of rod 33 the hooks 31 i are Withdrawn,thereby releasing the cross-pin 25 and the striker 22 which is nowdriven forward by spring 21 and strikes the shuttle 9 so as to throw itacross the guide 19 towards the opposite side of the loom. v

In order to prevent the shuttle from being thrown back when hitting theend. wall of the shuttle box 23-on the opposite side,each

box is provided with a leaf spring 36 acting towards braking the shutte. The same springs are also active when the shuttle is nently opentowards the warp thrown forward, by preventing it from prematurelyseparating from the striker 22, so that the force of thespring is fullyutilized.

[When the shuttle is thrown from the box 23, the gripping hook 9 whichis nearest to the striker 22 grips the weft 11 extending in the shuttlebox across the path of the gripping hooks and pulls it in the form of aloop across the shed (Fig. 9). On the shuttle entering the oppositeshuttle box the weft extended across this-box is simply moved aside bythe wedge action of the outer edge of the front hook of the shuttle.However, after this hook has passed below it, the weft at once returnsinto its initialposition so that onthe shuttle being thrown back, it issecurely gripped. by the jaw of the shuttle hook. Theweft carried alongby the hook of the shuttle after this latter has passed through theshed, is pulled ofi the hook when the weft is cast onto the fabric bythe reed 13. p

1 The means 20,for guidingthe shuttleflO (Fig. 6) arevformed as a tu eslotted at the bottom. The shuttle 10 has the form of a thin metal rodto which is fixed an eye. 37 extendingfoutwards through the slot. Thiseye 37 embraces the weft 12 taken from the bobbin 18. If, as assumed inFigs. 1 to 3, two weft threads shallbe introduced ateach operation intothe shed', which is permasuch eyes 37 must be mounted on the shuttle 10an two bobbins l8 mustfibe provided for in the loom.

The shuttle 10 is set'moving by means 7 which exactly-correspond tothose provided with respect to shuttle 9. As shown in 8v they comprise astriker 22' guided n atube 24. and acted upon by a spring, thisstrikerbeing pulled'backagainstthe action of this spring by aforked lever 38grip ing cross pins 25 mounted on, the 'striker, w ich is locked in thisposition by a-hook sha ed angle lever 31". It is unlo'ckedbythe for edlever 38" in swinging backward meeting a purpose t guide rail 19 forshuttle 9, w ich face the beams, two" the check, whereby the rodreleases the lever 31 by means ot a set screw Lever'38 which. serves forcompressing the springs acting on the shuttle 10 is directly coupledwith the lever-s26 and 26' serving for compressing the springs acting ontheshuttle 9. j The raising and lowering of the warp threads 3isefifected in this loom by means of laminae 40 extending upwards from arail 39 (Fig. 6), these, laminae replacing the-comb 5 illustrated inthe' diagranis of Figs. 1 and 2. The threads 3 extend through eyesformed on the freeends of'the laminae 40. Similar means comprisinglaminae; which, however, should extenddownwar ds', ma be provided. forguiding the warp threa s 4, which enter between the threads 3 at a steeangle. I prefer, however, to employ foi' this 1e laminae 19 formin partof the warp beams and which need merely be a little longer than laminae19 of the other rail 19 and need merely be provided with e es on theirfree. ends. Rail 39 is sus nded fromone end of two levers 41, each 0which rests with a roller on a cam disc 42 mounted on the mainshaft 29,the cams of this disc being so shaped that rail 39 is lifted and loweredas required,whereby the warp threads are raised andloweredcorrespondingly. In

order to vobtain the correct guiding of the warp threads 3, I preferfixing to the rail 39 a comb 43, through each gap of which extends awarp thread 3.' In order to form the shed nothing is required but theraising and lowering of the warp threads 3. 'In order, however, to bevable to formthe shed as uickly as possible and in order further to sorten the movement of rail 39, I prefermovingv the warp threads4infopposition to the warp threads 3, which can-be efi'ected by loweringand'raising the rails 19*and 19, the shuttle box 23"plartaking in thismovement, if necessary. 0 this end the rails 19, 19 are alsosuspendedfrom the ends oftwo levers ,44 (Fig. 6) which are connectedby chains 46passing over asleeve45 with levers 41 in such manner that they move in oposite directions, when the levers [are roc ed. 47 isafurther comb fixedalso to lever 44 and servingifor securingYthe correct guid ingrof thewarp threads. I t H c 1 he reed 13 which pushes thethreald 11 towardsthe fabric 'ro ects from above into the group of warp tli v 11 which hasjust been introduced. The reed ismov'ed; towards the fabric and afterhaving cast the weft on is pulled backjrom between reads '3 behindtheweft cast the behind the other branch of the loop. After the weft hasbeen introduced the distance between the two branches of the loop formedby the weft is greater than allowed in the finished fabric and for thisreason the two parts of the double reed are movable relatively to eachother. When entering the war they are spaced apart a distance equal to te width of the loop, however, near the' end of their movement towardsthe fabric their distance diminishes so-far that the two branches of theloop when reaching the fabric assume the correct distance relative toeach other. The double reed 13 is moved in such manner by the followingmeans: the two reeds 13 are mounted at the ends of two levers 48 (Figs.4 and 6), which are mounted for rotation llke a pair of scissors at theend of a double armed lever 49 rotatable about a fixed point of themachine frame. I The free ends of the two levers 48' are normallyforcedasunder by a spring 50, so that the pair of scissors is opened and thetwo reeds 13 are aced widely apart. The free end of the dou le-armedlever 49 is pivoted by a rod 51 to one arm of an angle lever 53 mountedfor rotation on a fixed shaft 52, the other arm of the angle levercarrying a roller which is in contact with a cam disc 54 mounted on themain shaft 29. This cam disc by actingon the lever'53, rod 51 and lever49, causes the double reed 13 to be raised and lowered relative to thewarp threads. That lever 48, the lower part of which adjoins the guide19, is coupled by means of a link 55 with one end of a double armedlever 57 mounted for rotation about a point 56 of the machine frame, theother end of lever 57 carrying the roller 58 which contacts with a camdisc 59 mounted on the main shaft 29. During the rotation of the mainshaft 29 the cam disc 59 causes lever 57 to rock, and this lever setsone of the levers 48 rocking b means of the connecting rod 55, the otherever 48 partaking in the rocking movement owing to the connectionestablished by the spring 50. In consequence of this movement, when thedouble reed '13 rojects intothe grou of warp threads the lower arms ofthe evers 48, are pulled towards the fabric and during this movement acttowards casting the weft 11 in front of them onto the fabric. If thatlever 48 which is carried along by spring 50, has part of the loo in'front of it onto the fabric it is stoppe b a check 60, so that only thelever 48 whic is coupled with lever 57 by the connecting rod 55 can moveon, stretching spring 50 and cancarry the part of the loop ad'oining itinto the correct position close to t e other part'which has already beenapplied against the fabric.

After this has been effected the double reed 13 is withdrawn frombetween the war threads and the pair ofcoupled levers 48 1s swung backtowards the guide 19 outside the warp threads. In order to lessen thedistance throu h which the reed 15 is moved in casting t e weft12introduced into the permanently open shed onto the fabric, the

side fr'om which the shuttle is struck, by the preceding bindin s sothat the weft must be cast on only on t e other side. Each of the forks14 on either side is fixed to the end of an angle lever 61, the otherend of which carries a roller in contact with a cam disc 62 on theintermediate shaft 30. The two cam discs 62 are staggered 180. Inasmuchas the shaft 30 rotates onlyat half the number of revolutions of themain shaft 29, each cam disc '62' becomes operative'only during everysecond rotation of the main shaft 29 and the staggered position of thetwocam discs has for its result that while one weft is passed throughthe shed, the fork 14 on I one side of the loom and duringthe assing ofthe next succeeding weft, the for 14 on the other side will carry thatend of the weft 12 which'is not applied against the fabric into reach ofreed 15.

Reed 15 projects towards the warp threads from below, it forces the weft12 placed in front of it'towards the fabric, is withdrawn in downwarddirection from between the warp threads and it is carriedback into itsinitial position underneath the warp threads. It is mounted on one endof an anfle'lever 64 acted upon by a spring 63 an havin its angle pointpivoted to the end of a ever 65 which is loose on shaft 52 and isinfluenced by a cam disc 66 fixed on the main shaft 29, so as to causethe reed 15 to be raised and lowered.

That arm of angle lever 64 which carries the 'reed- 15 isapplied by thespring 63 against a roller 67 mounted on the same Journal which carriesthe roller 58 of lever 57. On this'lever being rocked by the cam asmuchas it is arranged outside the closed shed formed by the two groups ofwarp threads and things can easily beset right in asmuch as this shuttleis alwaysreadily accessible; However,'if the shuttle 9 should jam itwill disturb the opening of the shed and this would lead to anentangling and tearing of the warp'threads. For this reason means areprovidedwhereby, as long as the shuttle 9 is not at rest in the shuttlebox "23, the rail 39 which moves the'warp threadsfl3, and the comb 43mounted thereon are prevented from being lowered. These means consist oftwo angle levers 69, one on each side of the loom, these levers beingpivoted to the machine" frame at 68 and being influenced bya spring 7 Oat one end, the other end projecting below a in 71 mounted on'theleverYH which carries the rail39' and cam 43 The other end of the lever 69 isfurther connected with the iron -core 73 of a solenoid 72. As soon asthe shuttle 9 enters the shuttle box on one side of the loom the circuit74 '(Fig. 10) con taining the two solenoid ,coils 72 is closed, where y"the iron cores 73 I are attracted which now cause the angle "lever 69 torock so as to release levers 41, which are now free to be lowered inaccordance with the shape of the cam discsf42. The circuit is closed bymeans oftwo switches connected in parallel, one such switch beingmounted on each side of the loom. Each switch consists of a double-armedlever 75 having a blade 76, which cooperates with a pair ofcontact'springs 77. spring 7 8 acting on one end of the contact lever 75tends to normally pull theblade' 76 away from the contact springs 77.That end of the lever 75 on which the spring 8 acts, projects into theath of the gripper'hooks of shuttle 9 in t e shuttle'box and isforcedback by' the shuttle against the action of spring 78,

whereby the blade 76 is forced in contact box on the other side, theother switch is closed. I

Obviously this electric safety device-can also be replaced byanother-device, for instance a mechanical one.

The warp threads are pulled and the fabric is carried forward as usualby'thebeam 79 which is driven in a well-known manner from the main shaft29 by a suitable gearing (not shown), and which also effects the iweavmg, com rising bodily moving'one of placing of the fabric onto thework beam intended to mean a shed adapted for a weft motions.

to be entered therein. The term shuttle A is meant to include allkindsof picking I wish it to be understoodtha't I do not desire to belimited to the exact details of e constructions shown and describedforobvious modifications will occur to a person skilled in the art. e,Iclaim:, e 1. The method of roducing a fabric by weaving comprisingbodilymoving one of two groups ofwarpthreads alternately in one and theother direction so as to form each alternateoperation two sheds, aclosed shed and an open shed to the rear of said closed shed, andpassing a weft threadthrough the front shed and another weft threadthrough: the rear shed, before the front shed h'asbeen dissolved andbeating up each weft'thread.

- 2. The method of producing a fabric by weaving comprising bodilymoving one of two groups of warp 'threads alternatel in one and theother direction so as to orm in each alternate operation two sheds, a

closed shed and anopen shed to 'the rear of saidclosed shed, andsimultaneously passing'aweftthread througheeach shed and beating upeach, weft thread.

3. The method ofproducing a fabric by weaving, comprisingbodily movingone of two groups of warp threads extending at an' angle to each otheralternatel in one and the other vdirection so as to orm in eachalternate operation two sheds, a closed shed and an open shed to therear of said closed shed, and passing a weft thread through the frontshed and another weft thread through therear shed, before the front shedhas been dissolved and beating up each weft thread. 4 roducing afabriclby weaving, comprising, odily movin one of 4. i The method of twogroups'of warp'threads extending at an.

angle to each other alternatel in one and the other direction so as toorm-in each alternate operation two sheds, a closed shed and an openshed to the rear of saidclosed shed, and simultaneously passing" a' weftthread through each shed and beating up each weft thread. c e

5. The method of producing a fabric by weaving, comprising bodily movingone of two groupsgof warp threads so ast-o cause the same to cross thethreads of'the other group and to form'aclosed shed in front and an openshed to the rear of the crossing and passing" a weft thread throu h' thefront shed and another weft threatlt rough the i rear shed, before thefront shed has'been.

dissolved and beating upeach weft thread. 6. The method of producing afabric by two groups 0 warp threads so as to'cause the same tocross thethreads of the other group and to for'm a closed shed in front and anopen shed to the rear of the crossing and simultaneously passing a Weftthread through each shed and beating up each weft thread.

7. A loom comprising means for bodily moving one group of warp threadsso as to form in each alternate operation two sheds, a closed shed andan open shed to the rear of said closed shed and means for passing aweft thread through the front shed and another weft thread throu h therear shed, before the front shed has een dissolved and means for beatingup each weft thread.

8. A loom comprising means for bodily moving one group of warp threadsso as to form in each alternate operation two sheds,

a closed shed and an open shed to the rear of said closed shed,stationary shuttle guiding means permanently arranged in said open shedand means for passing a weft thread through the front shed and anotherweft thread throu h the rear-shed, before the front shed has beendissolved and means for beating up each weft thread.

9. A loom comprising means for bodily moving one group of warp threadsso as to form in each alternate operation two sheds, a closed shed andan open shed to the rear of said closed shed and means forsimultaneously passing a weft thread through each shed and means forbeating up each weft thread.

10. A loom comprising means for bodily moving one of two groups of warpthreads so as to cause same to cross the threads of the other group andmeans for forming a closed shed in front and an open shed to the rear ofthe crossing and means for passing a weft thread through the front shedand another weft thread through the rear shed, before the front shed hasbeen dissolved and means for beating up each weft thread.

11. A loom comprising means for bodily moving one of two groups of warpthreads so as to cause same to cross the, threads of the other group andmeans for forming a closed shed in front and an open shed to the rear ofthe crossing and means for simultaneously passing a weft thread througheach shed and means for beating up each weft thread.

12. A loomromprising means for form ing the warp threads into two groupsextending at an angle to each other, means for bodily moving the threadsof one group to-,

wards and past the threads of the other group and back again so as toform two sheds, a closed shed and an open shed to the rear of saidclosed shed, means for passing a weft thread through the front shed andanother weft thread through the rear shed formed in said warp threads inconsequence of such movement of said moving means before the front shedhas been dissolved and means for setting the weft threads in thetwo-sheds onto the woven fabric.

13. A loom comprisingmeans for forniing the warp threads into two groupsextending at an angle to each other, means for bodily moving the threadsof one group towards and past the threads of the other group and backagain so as to form two sheds, a closed shed and an open shed to therear of said closed shed, means for passing a weft thread through thefront shed and another weft thread throu h the rear shed formed in saidwarp thread before the front shed has been disso ved and separate meansfor setting the weft threads in the two sheds onto the woven. fabric.

14. A loom comprising two warp beams, means. for forming the threadsfrom each beam into. a group of their own extending at an angle to thegroup from the other beam,

means for bodily moving the threads of one; group towards and past thethreads of the other group and back again, means for passing a weftthread through the front shed and another weft thread through the rearshed formed in said warp threads in consequence of a movement of saidmoving means before the front shed has been dissolved and means forsetting the weft threads in the two sheds onto the woven fabric. a

15. A-loom comprising two warp beams, means for forming the threads fromeach beam into a group of their own extending at an angle to the groupfrom the other be'am,'means for bodily moving the threads of one grouptowards and past the threads of the other group and back again, meansfor simultaneously passing a weft thread through each of the shedsformed in said threads in consequence of a movement of said moving meansand means for setting the weft threads in the two sheds onto the wovenfabric.

16. A loom comprising. means for forming the warp threads into twogroups extending. at an angle to each other. a comb with eyes" for thethreads of one group movable towards and pastithe threads of the othergroup, a shuttle guiding rail movable in opposite direction to saidcomb, means for passing a weft thread through the front shed and anotherweft thread through the rear shed formed in said threads in consequenceof a movement of said comb and rail before the front shed has beendisweft threads in the two sheds onto the woven fabric and means forbeating up each weft thread. 4 Y

17. A loom comprising means for for1n ing the warp threads into twogroups extending at an angle to each other, a comb with eyes for thethreads of one means I s in consequence of such movement of sa1d mov1nsolved and separate means for setting the means for the threads guidingmeansbeing shaped to conjointly orm a groove extending at right anglesto fabric and means for a group of warp threads,

. group,

group movable towards and past the threads of the other group, a guiderail movable in opposite direction to said comb, means for passing aweft thread through the front shed and another weft thread through therear-shed formed in said threads in consequence of a movement of saidcomb and rail before the front shed has been dissolved and two reedsmovable substantially in the direction of the threads for setting theweft threads in the two sheds onto the woven beating. up each weftthread.

18. A loom comprising means for forming the warp threads into two groupsextening at an angle to each other, guiding means for the threads of onegroup movable towards and past the threads of the other group, saidguiding means being formed to also guide a shuttle, means for passing aweft thread through each of the sheds formed in said threads inconsequence of a movement of said guiding means and separate means forsettingthe weft threads in the two sheds onto the woven fabric.

19. A loom comprising means for forming the warp threads into two groupsextending at an angle to each other, guiding of one group, said the warpthreads for guiding a shuttle,

means for passing a weft thread through each of the sheds formed in saidthreads in consequence of a movement of said guiding means and separatemeans for setting the weft threads in the two sheds onto the wovenfabric.

20. In-a loom comprising means for forming the warp threads into twogroups extending'at an angle to eachother, a pair of cooperating combshinged together, a row of laminae on each comb, the laminae on one combbeing formed with eyes for guiding the laminae on both combs beingformed in their adjoining parts with indentures combining to form aguide channel for a shuttle.

21. A loom comprising means for form-.

ing the warp threads into two groups extending at an angle to eachother, guiding means for the threads of one group movable towards andpast the threads of the other thread separating means rigidly combinedwith said guiding means, means for simultaneously passing a weft threadthrough each of the sheds formed in said threads in consequence of amovement of said guiding means and separate means for setting .the weftthreads in the two sheds onto the woven fabric.

22. A loom comprising means for forming the warp threads into two groupsextending at an angle to each other, guiding means for the threads ofone group movable towards and past the threads of the other group,thread separating means rigidly combined with said guiding means, a rocklever carrying said guiding and separating means. a cam disc associatedwith said lever to rock same, means for simultaneously passing a ,weftthread through each of the sheds other group, means for moving theguiding I means of one group, means for connecting the uiding means ofthis group with those of the other group in such manner as tosimultaneously move the two guiding means and groups of threads inopposite direction,

means for simultaneously passing a weft thread through each of the shedsformed in said threads in consequence of a movement of said for settingthe weft threads in the two sheds onto the woven fabric.

24. A loom comprising means for forming the warp threads into two groupsextending at an angle to each other, separate guiding means for thethreads of each group. the guiding means of each group being movabletowards and past the threads of the other group, means for moving theguiding means of one group, a sheave, a flexible member suspended fromsaid sheave and connecting the guiding means of this group with those ofthe other group in such manner as to simultaneously move the two guidingmeans and grou s of threads in opposite (1i rection, means f drsimultaneously passing a weft thread through each of the sheds formed insaid threads in consequence of a movement of said guiding means andseparate means for setting the weft threads in the two sheds onto thewoven fabric.

25. A loom comprising means for forming the warp threads into two groupsexguiding means and separate means tending at an angle to each other,separate guiding means for the threads of each group, the gu1ding meansof each group being movable towards and past the threads of the othergroup, means for moving the guiding means of one group, a separate levercarrying the guiding means of each group, means for connecting saidlevers in such manner as to simultaneously move the two guiding meansand groups of threads in opposite direction, means for simultaneouslypassing a weft thread through each of the sheds formed in said threadsin consequence of a movement of sad gu1ding means and separate means forsetting the weft threads in the two sheds onto the woven fabric.

26. A loom comprising means for moving the warp threads so as to form ineach operation two sheds,.one to the rear of the other, means comprisinga shuttle for passing a weft thread through each shed, a shuttle guidingchannel being formed in said shed forming means and an eye on saidshuttle projecting from said channel and means for beating up each weftthread.

27. A loom comprising means for moving the warp threads so as to formtwo sheds, one to the rear of the other, in each operation, twoshuttles, two juxtaposed shuttle boxes, a spring-actuated shuttlestriker associated with each shuttle box and common controlling meansfor said strikers and means for beating up each weft thread.

28. A loom comprising means for moving the warp threads so as to formtwo sheds, one to the rear of the other, in each operation, twoshuttles, two juxtaposed shuttle boxes, a spring-actuated shuttle.

striker associated with each shuttle box, two forked levers coupled witheach other for controlling said strikers and a common actuating meansfor said levers and means for beating up each weft thread.

29. A loom comprising means for moving the war threads so as to formtwosheds, one to the rear of the other, in each operation, two shuttles, aweft thread associated with each shuttle, means for simultaneouslymoving said shuttles and weft threads in juxta osition across said loomand means for -s iiftingthe weft thread governed by one shuttle towardsthe weft thread governed by the other shuttle and means for beating upeach weft thread. f

30. A loom comprising two groups warp threads, means for moving saidgrou sso as to form in each operation two she s, one to the rear of theother, means for looking said moving means in operative position, ashuttle and electric means arranged to be actuated by said shuttle forreleasing said moviu means and means for beating up each we t thread.

31. A loom comprising two groups of warp threads, means for moving saidgrou s so as to form in each operation two she s, one to the rear of theother, means for looking said moving means in operative position, ashuttle, a solenoid adapted to act on said locking means and a switchdevice adapted to control said solenoid and to be actuated by saidshuttle and means for beatingup each weft thread.

32. The method of producing a fabric by weaving comprising positivelyguiding one of two groups of warp threads alternately in one and theother direction so as to simultaneouslvform in each alternate operationtwo sheds, one to the rear of the other, pass-

